Millimeters to Micrometers Converter
Convert millimeters (mm) to micrometers (µm)
Result
1,000 µm
Micrometers
1 mm = 1,000 µm
1 mm in other units
- 1Enter a valueType the number to convert
- 2Pick the unitsChoose what to convert from and to
- 3Read the resultSee it in every other unit too
How to convert millimeters to micrometers
One millimeter equals 1,000 micrometers, so multiply the number of millimeters by 1,000.
µm = mm × 1,000
1 mm = 1,000 µm · 1 µm = 0.001 mm
Worked example
To convert 5 millimeters to micrometers: 5 mm × 1,000 = 5,000 µm.
About millimeters (mm)
A millimeter is one thousandth of a metre. Rain, screen sizes and engineering drawings are often measured in millimetres.
About micrometers (µm)
A micrometer (micron) is one millionth of a metre, used for cells, fibres and machining tolerances.
More conversions
Millimeters to other units
Frequently asked questions
How many micrometers are in one millimeter?
One millimeter equals 1,000 micrometers.
How many millimeters are in one micrometer?
One micrometer equals 0.001 millimeters.
How do I convert millimeters to micrometers?
Use the formula µm = mm × 1,000. For example, 5 mm × 1,000 = 5,000 µm.